Respiratory mask



FIG. 1 is a front and right side perspective view of a respiratory maskshowing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The broken lines in the drawings depict portions of the respiratory maskthat form no part of the claimed design.

CLAIM The ornamental design for a respiratory mask, as shown anddescribed.